import axios from 'axios'
import { Message, MessageBox } from 'element-ui'
import store from '@/store'
import router from '@/router'
import Vue from 'vue'

// create an axios instance
const service = axios.create({
  // baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  baseURL: '/api',
  timeout: 30000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    console.log(response, 'response')
    const res = response.data
    // if the custom code is not 20000, it is judged as an error.

    // 下载Excel
    if(response.headers['content-type'].startsWith('application/vnd') || response.headers['content-type'].startsWith('application/octet-stream')){
      const blob = new Blob([response.data], {type: response.headers['content-type']})
      const fileName = decodeURI(response.headers['content-disposition'].split('=')[1])
      let objectUrl = URL.createObjectURL(blob); //创建下载的链接
      let a = document.createElement("a");
      a.href = objectUrl;
      a.download = fileName; //设置文件名
      //下面这个写法兼容火狐
      a.dispatchEvent(new MouseEvent('click', {bubbles: true, cancelable: true, view: window}));
      window.URL.revokeObjectURL(blob); //释放bolb对象
      // window.location.href = URL.createObjectURL(blob)
      return
    }

    if (res.code !== 200) {

      Vue.$toast.open({
        message: res.msg || 'Error',
        type: 'error',
        duration: 5000,
        dismissible: true,
        position: 'top'
      })

      if(res.code === 401){
        localStorage.setItem('isLogin', null)
        localStorage.setItem('token', null)
        router.push("/login")

      }


      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    console.log('err' + error) // for debug
    Message({
      message: '服务器连接失败！' + error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

Vue.prototype.$http = service

export default service
